I would really like to draw a table like on the photo. Everything I have tried does not work. Maybe I do something wrong right at the beginning. I only got the table you can see in the code below. There is still a lot to do for getting a table like on the photo. But I just do not understand how to get there. It is all new for me and I hope you are not angry about the question. (and sorry for my bad English). Thank you for your help!
\documentclass[a4paper, fontsize=11pt]{scrbook} \usepackage{geometry} \geometry{a4paper, top=25mm, left=25mm, right=25mm, bottom=20mm, headsep=10mm, footskip=12mm} \usepackage[ngerman]{babel} \usepackage[T1]{fontenc} \usepackage[latin1]{inputenc} \usepackage{amsmath} \usepackage{amssymb} \usepackage{multirow,array} \usepackage{arydshln} \dashlinegap=1pt \usepackage{acronym} \begin{document} \begin{table} \renewcommand\arraystretch{1.5} \begin{tabular}{*{5}{>{$}c<{$}|}} \multicolumn{2}{c}{} & \multicolumn{3}{c}{Spieler 2} \\ \cline{3-5} \multicolumn{1}{c}{} & & s_{21} & s_{22} & s_{23} \\ \cline{2-5} \multirow{3}*{Spieler 1} & s_{11} & 1 & 6 & 0 \\ \cline{2-5} & s_{12} & 2 & 0 & 3 \\ \cline{2-5} & s_{12} & 3 & 2 & 4 \\ \cline{2-5} \end{tabular} \end{table} \end{document} 
